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REVEX
1PH 280A
User’s manual
Heater bakeout function
When a heater insulated with magnesium oxide (MgO) is powered off, not in use or in storage for a long period
of time, it can absorb moisture. If full power is applied, excessive current can damage the heater or blow fuses.
The heater bakeout feature limits the voltage and current applied as the heater is brought back in to service.
This drives moisture out of the heater and prevents blown fuses and damage to the heater.
14.1 Using Heater Bakeout
While the heater bakeout feature is active, the REVEX power controller ramps the
current according to the user-set current and ramp time parameters for the heater
bakeout function. The heater bakeout function does not ramp the output above
the normal process set point. Once the function has run for the user-set time, the
bakeout function terminates and the power controller attempts to perform control
to set point normally.
Use Heater Bakeout Ramp Time to set the duration of the bakeout in minutes. Use
Heater Bakeout Current to set the current to which the function attempts to ramp
in Amperes. Use Heater Bakeout Off Time to set how many minutes the heater can
be off before the bakeout fuction runs the next time the heater is used.
While the performing the heater bakeout function, the power controller displays
a message.
14
Bakeout
SP 100%
Heater bakeout Indication
(only in Version with Display:
Standard version or
Option Code 5/6/7/9/A/C/F)
Summary of Contents for REVEX 1Ph 280A
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